Based on FAA guidance, uAvionix requires all echoUAT customers to utilize an approved pressure altitude encoder capable of data input rates meeting the requirements of DO-282B. The uAvionix echoALT is a retrofit altitude encoder that provides pressure altitude data meeting these requirements. Installation of the echoALT utilizes the existing wiring and a provided Y-cable that connects the existing 6-pin wiring harness to the echoALT and echoUAT. A software update is required for the use of echoALT. Refer to echoUAT Service Bulletin 0402024 for instructions. Interested in Trading Up with your echoUAT?  Learn more about the echoESX Trade Up program and SAVE!